1979 Evinrude Outboard V-6 Models Service Repair Manual Item No. 5431, Page 137Get this manual

1979 Evinrude Outboard V-6 Models Service Repair Manual Item No. 5431, Page 137

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Specific gravity will vary points (.004) with every 10 () temperature changeFor each 10) below 80F (27 ), subtract points from hydrometer readingFor each 10 () above 80 (27 ), add points to hydrometer